Clipman - Clipman is a clipboard manager for Xfce.
Ditto - Easy to use interface; Search and paste previous copy entries; Keep multiple computer's clipboards in sync; Data is encrypted when sent over the network; Accessed from tray icon or global hot key; Select entry by double click, enter key or drag drop…
CopyQ - CopyQ : Clipboard Manager with Advanced Features.
Parcellite - Parcellite is a lightweight GTK+ clipboard manager.
1clipboard - 1Clipboard is a universal clipboard managing app that makes it easy to access your clipboard from anywhere on any device.
ClipMenu - ClipMenu can manage clipboard history. You can record 8 clipboard types, from plain text to image.